noun
                                                time for Earth to make a complete rotation on its axis
                                                                                                Synonyms
                                                
                                                                                                                                                                        twenty-four hours
                                                                                                                                                                                                                                twenty-four hour period
                                                                                                                                                                                                                                24-hour interval
                                                                                                                                                                                                                                solar day
                                                                                                                                                                                                                                mean solar day
                                                                                                                                                            
                                                
                                                                                                Examples
                                                
                                                                                                        - two days later they left
- they put on two performances every day
- there are 30,000 passengers per day
 
                                                                                        
                                                noun
                                                some point or period in time
                                                
                                                                                                Examples
                                                
                                                                                                        - it should arrive any day now
- after that day she never trusted him again
- those were the days
- these days it is not unusual
 
                                                                                        
                                                noun
                                                a day assigned to a particular purpose or observance
                                                
                                                                                                Examples
                                                
                                                                                                        - Mother's Day
 
                                                                                        
                                                noun
                                                the time after sunrise and before sunset while it is light outside
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - the dawn turned night into day
- it is easier to make the repairs in the daytime
 
                                                                                        
                                                noun
                                                the recurring hours when you are not sleeping (especially those when you are working)
                                                
                                                                                                Examples
                                                
                                                                                                        - my day began early this morning
- it was a busy day on the stock exchange
- she called it a day and went to bed
 
                                                                                        
                                                noun
                                                an era of existence or influence
                                                
                                                                                                Examples
                                                
                                                                                                        - in the day of the dinosaurs
- in the days of the Roman Empire
- in the days of sailing ships
- he was a successful pianist in his day
 
                                                                                        
                                                noun
                                                the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis
                                                
                                                                                                Examples
                                                
                                                                                                        - how long is a day on Jupiter?
 
                                                                                        
                                                noun
                                                the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
                                                                                                Synonyms
                                                
                                                                                                                                                                        sidereal day
                                                                                                                                                            
                                                
                                                                                             
                                                                                        
                                                noun
                                                a period of opportunity
                                                
                                                                                                Examples
                                                
                                                                                                        - he deserves his day in court
- every dog has his day
 
                                                                                        
                                                noun
                                                United States writer best known for his autobiographical works (1874-1935)
                                                                                                Synonyms
                                                
                                                                                                                                                                        Clarence Day
                                                                                                                                                                                                                                Clarence Shepard Day Jr.